The last list seemed to interest people and is now a bit outdated. I checked all links below, modified some and added those listed in the comments and some others.

Any comment and addition welcome, off course.

Ruy, maybe you can un-anchor the old thread and replace it by this one ?

RAF and RAAF ORBs available on the Web (on 9 November 2009):

Note: for all ORB in Australian archives (starting with http://naa12.naa.gov.au), the direct link listed below won't work. You have first to connect to them. Go to the page http://naa12.naa.gov.au/ and click on Guest, that will open a connexion for you, then all links listed below will show you the right document (to see i treally you have then to click on the "View digital copy" button)

Hi from a Newbie, I am tring to obtain the ORBs for 38 298
and 644 sqadrons, the url shown for 298 and 644 to obtain the ORB's does not work for me in OZ. 38 was sort of mixed up with both the previous. Any ideas would be welcome
Thanks Peter Holme

Hi,
Saw a recommendation for http://www.oldrafrecords.com/about.php by Robin Barnes on RAF Commands Forum. Includes 43, 54, 56, 79, 141 and 145 Sqns. From WW1 to 1941. Robin Barnes plans to add much more later. A great initiative.